Smoke-consumer



(No Model.)

P. L. BATES.

SMOKE CONSUMER.

No. 455,153. Patented June 30, 1891.

I a front view of the same.

UNITED STATES PATENT; OFFICE...

FRANK L. BATES, OF SACRAMENTO, CALIFORNIA.

SMOKEYT-CONSUMER.

SPECIFICATION forming part of Letters Patent No. 455,153, dated June 30, 1891.

Application filed February 10,1891. $erial No. 380.978. (No model.)

To aZZ whom it may concern:

Be it known that I, FRANK L. BATES, a citizen of the United States, residing at Sacramento, Sacramento county, State of California, have invented an Improvement in Smoke- Consumers, and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to that class of devices for effecting in furnaces a more perfect combustion whereby the smoke is consumed, in which a plate extending into the fire-box serves to direct the air downwardly and in intimate contact with the fuel. 4

My invention consists in the novel construction and arrangement of the air shield, whereby its adjustments are effected, and the peculiar plate for controlling the draft, all of which will be hereinafter fully described, and specifically pointed out in the claims.

The object of my invention is to provide an air-shield mour ted in such a manner as to be entirely independent of the door and capable of having a vertical adjustment and a forward and back adjustment.

Another object is to provide for regulating the incoming draft by reducing its volume at an advanced stage of combustion, when the greater portion of the smoke may have been consumed.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1 is a vertical section of. a portion of the front wall of a furnace and of its door, showing the application of my airshield and of the draft-controller. Fig. 2 is Fig. 3 is a view of the draft-controlling plate.

A is the firedoor of a furnace of any description.

B is the door-casing.

C is the air-door of the fire-door, and consists of the hinged upper section or part of said fire-door, as usual.

D is my air-shield, consisting of a suitable plate.

E is the door-latch.

G is a portion of the front wall of the furnace g.

Mounted in bearings 72 on the front of the door-casing B is a transverse rock shaft or bar I-I, having made through it an elongated slot, through which the air-shield plate D passes. The shield is thus carried by the shaft, and it can be adjusted forward or back to throw it farther into or withdraw'it more from the furnace by simply slipping it through the slotted shaft H. A handle 61 is secured to the end of the shield for convenience in adjusting it, and said shield is held in the place to which it is adjusted by means of a small pin d, dropped through any of a series of holes, as shown, in the shield.

If, for example, it be desired to withdraw the shield a little more from the furnace, the pin d would be lifted from the hole in which it is shown in Fig. 1. The shield would then be drawn outwardly until the succeeding hole was exposed'and the pin then dropped through it. To adjust the shield farther into the furnace, the pin would be removed, the shield pushed in, and the pin then dropped into a fresh hole.

In addition to the adjustment forward and back of the shield, it has a vertical adj ustment, in order to throw its inner end toward or from the mass of burning fuel, as may be required. This is effected by means of'the arm h on the rock-shaft H and the set-screw h passing through said arm and bearing against the door-casing, as shown in Fig. 1. Now by turning this screw in the arm will be rocked outwardly and the inner end of the air-shield raised. By turning the screw .out the inner end of the air-shield will be lowered. It will be seen that this air-shield, being mounted independently of the door, does not interfere with the operation of said door, and all of its adjustments can be effected without regard to the size of the door-opening, and therefore said shield can be made as large as may be required and adjusted to the positions found best.

I is the draft-regulating plate mounted in the cavity of the door A, and having a stem portion t'extending downwardly through said door. The upper end of this plate normally reaches to a plane just below the bottom of the air-door. This plate is adapted to be raised by any suitable means, as by the swinging foot-lever J.

W'hen combustion has proceeded to a cer-v tain stage and all of the smoke is consumed, it is then unnecessary to keep the air-door 1. In a furnace, a smoke-consuming attachment consisting of an air-shield extending into the furnace to direct the air-draft down upon the fuel, and a slotted shaft or bar through which the air-shield passes, whereby it is supported and may be adjusted forward and back, substantially as herein described.

2. In a furnace, the smoke-consuming attachment consisting of the air-shield extendin g into the furnace to direct the draft of air upon the fuel, the slotted shaft orbar through which the air-shield passes, wherebyit is supported and may be adjusted forward and back, and the removable pin adapted to be dropped through any of a series of holes in the shield for holding said shield in the position to which it is adjusted, substantially as herein described.

3. In a furnace, the adjustable smoke consuming attachment consisting of the airshield passing into the furnace for directing the draft of air upon the fuel, the slotted rockshaft through which the air-shield passes, whereby it is supported and may be adj usted forward and back, and means for adjusting said shaft axially to raise or lower the shield, substantially as herein described.

4. In a furnace, the adjustable smoke-consuming attachment consisting of the airshield passing into the furnace for directing the draft of air upon the fuel, the slotted rockshaft through which the air-shield passes, whereby it is supported and maybe adjusted forward and back, the arm of the rock-shaft, and the set-screw of the arm for adjusting said shaft axially to raise or lower the shield,

substantially as herein described.

5. In a furnace, andin combination with its fire-door having the air-door, the shaft or bar mounted in bearings on the door-casing above the air-door and having a slot through it, and the air-shield passing through the slot of said rook-shaft and extending into the furnace, whereby said shield is supported and is adjustable forward or back, substantially as herein described.

6. In combination with the fire-door of a furnace having the air-door, the slotted rockshaft mounted in bearings on the door-casing above the air-door, the arm and set-screw whereby said shaft is adjusted axially, the

air-shield passingthrough the slotted shaft and extending into the furnace and adjustable forward and back in said shaft, and the removable pin fitting through holes in the shield for holding it in place, substantially as herein described.

7. In combination with the fire-door of a furnace having the air-door, the verticallymovable draft-regulating plate I, fitted behind the door and adapted to regulate the air-opening, substantially as herein described.

In witness whereof I have hereunto set my hand.

FRANK L. BATES.

Witnesses:

LINCOLN SONNTAG, S. H. NoURsE. 

